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Plate tectonics is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of the Earth' s lithosphere, since tectonic processes began on Earth between 3 and 3.5 billion years ago. The model builds ...


Plate tectonics definition, a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past adjacent plates. See more.


Define plate tectonics: a theory in geology: the lithosphere of the earth is divided into a small number of plates which float on and travel…


Plate tectonics is a geological science that studies the movements and nature of the earth's crust. Plate tectonics studies earthquakes, how mountains are formed, and other surface features of our lovely planet.


Mar 21, 2016 ... "We don't really know when plate tectonics as it looks today got started, but we do know that we have continental crust that was likely scraped off a down-going slab [a tectonic plate in a subduction zone] that is 3.8 billion years old," Van der Elst said. "We could guess that means plate tectonics was ...


Plate tectonics definition: Plate tectonics is the way that large pieces of the Earth's surface move slowly around. | Meaning, pronunciation, translations and examples.


Define plate tectonics. plate tectonics synonyms, plate tectonics pronunciation, plate tectonics translation, English dictionary definition of plate tectonics. n. 1. A theory that explains the global distribution of geological phenomena such as seismicity, volcanism, continental drift, and mountain building in...


plate tectonics definition, meaning, what is plate tectonics: the study of how the surface of the earth is formed, how the separate pieces of it move…. Learn more.


Mar 3, 2017 ... Plate tectonics is the scientific theory that attempts to explain the movements of the Earth's lithosphere that have formed the landscape features we see across the globe today. By definition the word "plate" in geologic terms means a large slab of solid rock. "Tectonics" is a part of the Greek root for "to build" ...